Disassembly Evaluation of BG Micro Ross Mobile Power Supply: Full of "core"

Insufficient power and weak endurance have become one of the most headache problems for smartphone users. The mobile power market is also heating up. POW core, a product recently launched by BG microrose, has a long history. The first product that has passed UL safety certification in the United States, adopts mobile power with the same cell as Apple iPhone and efficiency conversion rate of more than 90%

Disassembly and analysis of BG micro Ross mobile power supply

Insufficient power and weak endurance have become one of the most headache problems for smartphone users. The mobile power market is also heating up. POW core, a product recently launched by BG microrose, has a long history. The first product that has passed UL safety certification in the United States uses mobile power with the same cell as Apple's iPhone and an efficiency conversion rate of more than 90%. Soon after the product was launched, it was torn apart by enthusiasts. Let's go into the inner world of pow core together.

Look! It has three colors of milk white, champagne and pink. The color is simple, but there is no lack of elegance and fashion.

Use a small slotted screwdriver to open it from the edge joint on its back.

This is the whole structure of its back. The circuit board patches and solder joints are very clean without manual workshop traces.

Unscrew the screws along the position of the screws on the back.

Open the rear lid.

In this way, its whole "inner" world is displayed in front of us, very clean and refreshing.

Insufficient power and weak endurance have become one of the most headache problems for smartphone users. The mobile power market is also heating up. POW core, a product recently launched by BG microrose, has a long history. The first product that has passed UL safety certification in the United States, adopts mobile power with the same cell as Apple iPhone and efficiency conversion rate of more than 90%

Detailed explanation of the core part

Unscrew the fixing screw at the edge of the circuit board so that the battery and the circuit board can be taken out together.

This is its core part - lithium battery. The small size is full of real talents, but no wonder it is supplied by ATL company (Dongguan New Energy Battery Co., Ltd., apple battery supplier). It is a high-capacity lithium polymer rechargeable battery with more than 500 charging cycles. As for the capacitance itself, it is composed of two lithium polymer cells with a minimum capacity of 1530mah, that is, the actual capacity of each mobile power supply is more than 3060mah. The battery capacity of general mobile devices is about 1000 ma. Even considering the efficiency conversion, POW core 3000mAh can charge iPhone 4S twice, which is enough

Coding of lithium battery

It can be seen from the figure that the ATL cell is printed with sequence codes. Each sequence code is the only one of Dongguan New Energy Battery Co., Ltd. interested friends can also log in to the ATL official website to check the authenticity of the cell.

Japan boost inductor

There are two aspects of product safety protection. The first is the lithium battery charging management IC, which should not be underestimated. It adopts the special lithium battery charging chip made by national semiconductor of the United States to fully implement the slow charging, constant current charging and constant voltage charging mode of lithium battery, and automatically stop when fully charged, which can well protect the battery and prolong the service life of the battery

Charging management IC part

It seems that this mobile power supply has something more than other similar products. Oh, it turned out to be a protective plate on the battery. After careful study, it turned out to be a protective plate from Seiko, Japan. This is also the second protection of security. It protects the battery from charging and discharging, and the output short circuit protection.

Short circuit protection

Its workmanship doesn't feel like it comes from an ordinary family! The over-current protection responds quickly and the over-discharge detection is accurate. No wonder it is so exquisite. With such dual protection, consumers no longer have to worry about product safety.

Chip boost IC is supplied by torex company of Japan. The chip power inductor is from Murata company of Japan. Tantalum filter capacitor is a C-type filter capacitor from AVX company, a well-known Japanese enterprise.

Boost IC part

POW core adopts a double interface contact with gold plating thickness of 30 µ, which is 30 times that of ordinary contact, which is more safe and stable. It can satisfy two devices at the same time, but the outputs of the two interfaces are different. Different charging modes can be selected according to different situations. The current of one interface is 1a and the other is 500mA. 1A interface can charge iPhone or other large touch-screen smartphones, while 500mA is more suitable for old-fashioned Nokia, Samsung and other small screen phones. Using the 1A output port, the charging completion speed will be much faster. Of course, in fact, any mobile phone can use a 500mA interface for charging. Although the speed will be slower, the charging efficiency will be higher and protect the battery.

USB output port

It is worth mentioning that the product is a high effic high-efficiency circuit independently developed by BG microrose, which ensures that the power conversion rate is up to more than 90%. The voltage of mobile power battery is 3.7V, while the output voltage is 5.0V. Power can be output only through boost circuit. In the process of boosting, power loss can not be avoided, including internal consumption of components, led loss, heat loss, etc. after all these factors are calculated, the conversion rate of this power supply can still be stable at more than 90%. The same type of products on the market are usually only 50% - 80%.

BG micro Ross POW core has reached a new benchmark in mobile power in terms of design style, workmanship and hardware configuration. It is hoped that it can transfer its energy to where it is needed as expected by consumers

Disassembly Evaluation of BG Micro Ross Mobile Power Supply: Full of

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